Adjustable angle-defining gage.



I. G. LONGLEY.

ADJUSTABLE ANGLE DEFINING GAGE.

APPLICATION FILED SEPT 18. 1916.

Patented Apr. 17, 1917.

WNW/K N1 NI QM w VNWN @QW H 9 N 9% N \FWWLKX. IWWHNH 1| l r a PATENT @Fl lltlfi IRA G. LONGLEY, 0F KIT CARSON, COLORADO, ASSIGNOR OF ONE-HALF TO N. E. MILLS, 0F LOVELAND, COLORADO.

ADJUSTABLE ANGLE-DEFINING GAGE.

Application filed September 18, 1916.

To all whom it may concern Be it known that I, IRA G. LONGLEY, a citizen of the United. States of America, residing at Kit Carson, county of Cheyenne, and State of Colorado, have invented a new and useful Adjustable Angle-Defining Gage, of which the following is a specification.

This invention relates to improvements in adjustable angle defining gages.

The object of the invention is to provide a gage of this character that is adapted for all classes of work where the laying out of lines at different angles and on planes at right angles to each other, may be accomplished, particularly in the marking ofl of roofing timbers and the like preparatory to sawing the same.

Further, to provide a gage comprising a main member having parallel adjustable blades hinged together t one end, and blades at each end of said main member, which have a swinging movement on a plane at right angles to the plane of swinging movement of the first mentioned blades, means being provided for clamping said blades in adjusted positions, said main member being T shaped in cross section and being provided with spirit levels.

These objects are accomplished by the device illustrated in the accompanying drawings, in which:

Figure 1 is a plan view of the said gage.

Fig. 2 is a side View of the same.

Fig. 3 is a side view, partly in section, of a portion of the gage, showing the manner in which the blades are hinged thereto.

Figs. 1 and 5 are end views of the gage.

Fig. 6 is a bottom view of one end of the gage.

Fig. 7 is a plan view of one end of the gage showing the hinged blades standing at right angles to each other, the hinge clampp ing plate, and thumb nut being removed. And

Fig. 8 is an edge view of the hinge end of one of the blades shown in Fig. 7

Referring to the accompanying drawings:

Thenumeral 1 designates the body portion of the gage, which be of any suit able material, preferably ahuninum, and which is T-shaped in cross-section to provide longitudinal flanges 2, which are at right angles to the sides of the body portion, as shown in Figs. 8 and 5. Upon the opposite ends of the underside of the body portion Specification of Letters Patent.

Patented Apr. 1'7, 191?.

Serial No. 120,769.

are formed depending parallel semi-circular plates 3, between which are hinged, respectively, the outer ends of blades 1 and 5, the blade lbeing of greater length than the blade 5, the longer blade being preferably seven inches in length, where the combined length of the blades is twelve inches. The

blades 4 and 5 are of the same thickness as the body portion 1, so that when they are folded up against the edge of the body portion, as shown inFig. 2, their side faces will be flush with the side faces of the said. body portion and with the semi-circular plates 3, the hinge ends 7 of the blades being reduced in thickness to pass between the said plates 3. The blades t and 5 are hinged between the plates 3 by screws 6, which are adapted to clamp the plates against the hinge ends of the blades to hold them in adjusted positions.

The hinge ends 7 are circular, but of less diameter than the plates 3, in order to fo m shoulders 8, each of which is at right angles to the length of the blade and in line with the axial center of the screw 6, as will be understood by reference to Fig. 8. The plates 3 are provided with marks or graduations indicating the degrees between 0 and 90, and as either of the blades t or 5 is swung out, its shoulder 8 registers successlvely with the degree marks on the plates 3,

and the desired angle at which the blade is to stand is thus ascertained, and the outer edge of the blade serves as a straight edge along which a pencil or other suitable marking means may be drawn.

When the blade is swung out to the limit of its movement, its shoulder 8 engages an abutment 9 between the plates 3, and in this position the blade stands at right angles to its closed position.

One end of the body 1 is formed with a circular plate 10, the axis of which is at right angles to but in the same plane with the axis of the plate 3, and this plate has an axial hub 11, into which is screwed a threaded pin or screw 12.

he hub 11 forms a pivot for the overlapping ends 13 of two blades 14, which when closed lie parallel and rest against the opposite edges of the flanged portion of the body 1. The overlapping ends 13 are in the form of circular hinge members having axial holes through which the hub 11 passes, and the hinge members are held upon the hub 11 and against the plate 10 by a clamping plate 15, having a tail portion 16, which is screwed to the body 1, as shown in Figs. 1 and 3.

The plate 15 has an axial hole to receive the hub 11, and a thumb nut 17 is screwed on the screw 12, and against the plate 15, thereby to clamp the said plate 15 against the overlapping ends 13, and thus hold the arms 14: in adjusted positions.

The plate 15 is graduated to indicate a sweep of ninety degrees for each blade 11-, and the blades 14 are each formed with a shoulder 18 at right angles to the length of the blade, and in line with the axial center of the screw 12, and these shoulders 18 register with the degree marks on the plate 15, as the blades are opened out, so that any angle at which it is desired to set the blade may be ascertained by moving the said blade until its shoulder registers with the degree mark indicating the required angle.

The blades 11 are of the same thickness as the flanged portion of the body 1, and thus their undersides are flush with the flanges 2, and with the circular plate 10, as will be seen from Figs. 2 and 5. The ends of the blades at, 5, and 1% may be provided with fins 19, which, when the blades are closed, fit into corresponding slits in the body portion, and thus hold the blades in alinement with the adjoining body portion.

The body of the gage may, if desired, be provided with a longitudinally disposed spirit level 20, and with a transversely disposed spirit level 21, as shown in Fig. 1.

In practice, the gage is used in the fol lowing manner: F or instance, if it is de sired to cut off the end of a joist or rafter at an angle of forty-five degrees to the length of the timber, the blade 14:, giving the required direction of the angle, is opened or swung out until the shoulder 18 on its hinged end registers with the mark on the plate 15, indicating 45 degrees; the blade is clamped in this position by the thumb screw 17, and the gage is placed upon the edge or side of the timber, as the case may be, with the adjacent flange 2 resting on the edge of the timber, while the side of the body portion of the gage, together with the arms 4: and 5, rest squarely against the side of the timber, the gage being thus supported in line with the side and edge of the timber.

The outer edge of the blade serves as a straight edge along which a pencil is drawn to make the saw guide mark on the timber. Should it be desired also to make guide lines on the face of the timber against which the blades 4 and 5 rest, the desired blade is swung to lie at the required angle, and clamped in that position; then the blade 1 1 serves for marking guide lines on one face of the timber while the blade 1 or 5, as the case may he, serves for marking guide lines on the other face ofthe timber, and thus with a single implement, guide lines at any required angle may be made on the side and edge of a piece of timber, with ease and 'apidity and without the danger of mistakes, the blades being preferably graduated.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A gage of the character described, comprising a main member having blades hinged upon one end of the same and adapted to open out in opposite directions, blades hinged upon opposite ends of said main member, and adapted to open in opposite directions and in a plane at right angles to the plane of movement of the first mentioned blades, means for defining the angles of said blades, and means for clamping said blades in adjusted positions.

2. A gage of the character described, comprising a main member which is T-shaped in cross section, blades hinged upon a common pivot at one end of said main member and adapted when closed to lie against and fiush with the edges of the flanged portion of said main member, blades hinged to the opposite ends of the main member and adapted when closed to lie against and flush with the lower edge of the main member, said blades having a swinging movement in a plane at right angles to the plane of movement of the former blades, means for defining the angles of said blades, and means for clamping said blades in adjusted positions.

8. A gage of the character described, comprising a main member, oppositely opening blades hinged to one end of said member, blades hinged to the opposite ends of the underside of said member, the plane of movement of the former and latter blades being at right angles, and means for definshaped in cross section, a pair of depending 1 parallel semicircular plates on each end of the main member, a blade pivoted at one end between each pair of plates, said plates being provided with degree marks, and shoulders on the hinged ends of said blades adapted to register with said marks when the blades are swung open, a circular plate on the upper side of the main member at one end thereof, blades having overlapping hinge members pivotally mounted upon said plate, a graduated circular plate secured to the main member above said overlapping hinge members, and means for clamping said plate against said overlapping members, the hinge ends of said blades having shoulders which register with the graduations on said clamping plate when the blades are opened, the swinging movement of the former and latter blades being in planes at right angles to each other.

5. In a gage of the character described, the combination with a longitudinal bar, T- shaped in cross section, and having a spirit level thereon, of oppositely opening blades hinged together upon one end of said bar, blades hinged to the opposite ends of the underside of said bar, the planes of movement of the former and latter blades being at right angles, the said blades in their closed position, forming in conjunction with the bar, a gage which is T-shaped in cross section.

6. A gage of the character described, comprising a longitudinal bar T-shaped in cross section, oppositely opening blades hinged to one end of said bar and adapted to lie when closed flush against the side edges of the horizontal portion of said bar, blades hinged to the opposite ends of the underside of said bar and to lie, when closed, flush against the edge of the vertical portion of said bar, said pairs of blades in closed position forming in conjunction with the bar, a gage T- shaped in cross section, and means for defining the angle of said blades when swung, the planes of swinging movement of the former and latter blades being at right angles. 7

7. In a gage of the character described, a

bar T-shaped in cross section, having a circular plate formed on one end thereof provided with an axial hub, a screw threaded in said hub, blades having hinge members which overlap and are pivotally mounted on said hub, a graduated circular clamping plate secured to said bar and having an aperture to receive said hub, and a thumb said bar, a gage which is T-shaped in cross section.

In testimony whereof I ailix my signature in presence of two witnesses.

IRA G. LONGLEY.

Witnesses:

GHAs. E. CoLLINs, J. G. MoCoRMIoK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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